Too much information

I know that smile!
It creeps up on me as children creep up to the Christmas tree.
A little mouse that quietly finds it way in though unexpected crevices
to POW (me) here you are again
to WOW (me) over and around
for the rest of the day
smiles going round like wedding flowers
to hope and to hold
till in rest do I depart
with dreams of winning this letter lottery again!